Automatic window ventilator



Jan. 19 1926.

- v. M. ALLEN AUTCMATIC WINDOW VENTILATOR Filed Aug ust 4, 1920 2Sheets-Sheet 1 n w m i g @W a w P 6 .M MM m J. M J 2 mm M F 4 "v l 4 d VIn M 9 K a r ll m l 4 x 2 H W Z x n( Ill] l 2 w U w W m m Jan; 19 1926.

v. MQALLEN AUTOMATIC WINDOW VENTILATOR Filed August 4, 1920 2Sheets-Sheet 2 Patented Jan. 19, 1926.

PATENT OFFICE.

VICTOR ALLEN, F WAVERLY, NEW YORK.

AUTOMATIC WINDOW VENTILATOR.

Application filed August 14, 1920. Serial No. 403,567.

To all whom it may concern Be it; known that I, Vrcron M. ALLEN, acitizen of the United States, and a resident of Waverly, in the countyof Tioga and State of New York, have invented certain new and usefulImprovements in Automatic Window Ventilators, of which the following isa specification.

This invention relates to window ventilators and has for its object theprovision of novel means for setting the ventilator panels in a desiredposition and locking them; in the set position or permitting them toautomatically close under the force of an abnormal wind.

A further object is to provide simple means for causing the ventilatorto close when the force of the wind increases.

The invention is illustrated inthe accompanying drawings and will behereinafter fully described, the novel features being subsequentlypointed out in the claims.

In the drawings- Fig. l is an elevation of my improved ventilator viewedfrom the outside and in closed 3 position.

' I Fig. 2 is a horizontal section on the line Fig. 3is an enlargedtransverse section on the line 33 of Fig. 2.

Fig. 4 is an enlarged detail section taken transversely through theadjusting devices.

Fig. 5' is an enlarged section on the line 5-5 of Fig. 3.

Fig. 6 is a section on the line 66 of Fig. l5, and

Fig. 7 'isa detail showing the panel-adjusting crank in elevation andthe sleeve for swinging the same in longitudinal section. In carryingout the invention I employ a frame 1 which is adapted to set in a windowframe below or against a. raised lower sash, andthe end bars ofwhich arehollow as clearly shown in Figs. 2, 3, 4 and 5. Within the centralopening of the frame, I pivotally mount aplurality of panels 2 which arepreferably of transparent lass but may be oftranslucent glass or ot ermaterial, the, strips of materialbeing fitted at" their ends inmetalholders 3. The holders 3 are somewhat conventionally shown as thespecific construction is not a part of the resent invention, but it maybe stated that t eyare designed particularly to facilitate the ;re-.moval of a broken panel and the insertion of a new one and also topermit the panels to lie in close overlapping relation in closedposition. The pivots of the several panels extend into the hollow endmembers of the frame and connecting bars at are pivotally attached tothe panels near the outer ends ofthe same so that the panels will swmglIl unlson.

To the ends of the pivots 5 of two panels, I secure angle levers orsupporting arms 6 which extend from the pivots through slots in theouter walls of the casing, of hollow end members, as shown in Figs. 2and 3, and to the outer ends of these levers or arms I secure light butstrong plates or sheets 7, which are disposed at the sides of theventilator opening, as will be clear on reference to Figs. 1 and 2. Theventilator panels are intended to be normally in open position, that is,inclined downwardly and outwardly and are arranged to be closed by'ahigh wind blowing thereon. As the panels, however, present their loweredges to the wind, it frequently happens that the surface presented tothe wind is not sufficient to effect the desired turning movement andthe blast passes into the room with disastrous results. I, therefore,provide the vertical blast-receiving plates 7 which present a broad areato the air currents and with the angle levers 6 the force of the wind onsaid plates is many times greater than if exerted against the panels andthereby insure the desired operation of the panels.

To pivot 8 of one of the panels, I secure a oar or rock shaft 9, whichis disposed within the adjacent casing or hollow end member of the framein axial alinement with the pivot. To this rock shaft or bar, I secure acrank arm 10, which projects toward the inner side of the frame and hasan ar uate branch 11, rising from its free end and terminating over therock shaft when the ventilator is closed. The branch 11 passes throughthe diametrically opposite lcngitudinal slots 12 in the outer end of thesleeve 13 which is threaded both interiorly and exteriorly and has itsinner end engaged in theinteriorly threaded cylindrical nut 14 whichextends through the inner wall of the frame and is rovided with anexternal annular rib or ange 15 which fits between said inner wall and acap 16 secured thereto. The nut is thus swiveledv in the wall so that itmay rotate but can not move endwise while the sleeve 18 may move endwisebut is prevented from rotatin; by its engagement with the branch 11 oi?the crank 10. The inner end of the nut 14 is milled or otherwisefinished so that it may be readily manipulated by hand, and in the.outer end of the sleeve 13 is fixed a pin 17 carrying a roller 18, whichbears against the outer edge of the branch 11, as shown most clearly inFig. 7. It will be noted that the longitudinal axis of the sleeve 13passes above the rock shaft 9 and the point of engagement of the roller18 with the branch 11 is eccentric to the rock shaft. Consequently, ifthe sleeve 13 be caused to move inwardly, a pull will be exerted on thecrank to rock the shaft and open the ventilator and the open adjustmentwill be maintained until the sleeve is moved outwardly. Within thesleeve 13 is fitted a second sleeve 19 having a threaded engagement withthe first described sleeve. The outer end of the sleeve 19 is adapted tobear upon the inner edge of the branch 11 so that if the sleeve 19 becaused to move outwardly, a push will be exerted upon the crank to rockthe shaft 9 and swing the panels to closed position. By properly settingthe two sleeves, the ventilator may be lo-ked in fully closed or fullopened posit'ion, or in any intermediate position.

The inner sleeve is adjusted by a plunger 20 mounted concentrically inthe inner end of the sleeve and provided with a milled head 21 or otherconvenient form of han dle. In the side of the plunger is a longitudinalgroove 22, engaged by a pin 23, in the sle ve so that while there may berelative longitudinal movement between the sleeve and the plungerneither can rotate relative to the other. A block 24 in the outer end ofthe sleeve 19 is held in frictional engagement with the branch 11 by aspring 25 arranged between the block and the plungor. this arrangementconstituting a governor to insure a smooth easy movement of the panelsin opening or closing.

To the rock shaft 9, at one side of crank 10. I secure a lever 26, whichstands vertically when the ventilator is closed and at a right angle tosaid lever I secure a second lever 27 which extends inwardly. To thefree end of the lever 26 I secure a chain or cable 28, which carries aweight 29 on its lo ver end. the intermediate portion of the cab epassing through a fork 30 on the end of the lever 27. hen the ventilatoris closed and the lever 26 is vertical, the force of the weight isexerted through the horizontal lever 27 to turn the shaft 9, but as theopening movement continues the force is gradually transferred from thelever 27 to the lever 26, so that it will be effectively applied fromthe beginning to the close of the movement. In closing the ventilator,the initial strain of lifting the weight is borne by the lever 26, whichis longer than the lever 27, in order to meet the greater demand uponit. The weiglit tends to hold the ventilator and, therefore, aids theopening operation performed by the sleeve 13. If the said sleeve beadjusted outwardly and the sleeve 19 be adjusted inwardly, theventilator will be free to operate automatically, being yieldably heldopen by the Weight and closing against the action of the weight when thewind gets high. It will thus be seen that I have provided a very simpleand eliicient mechanism whereby the ventilator panels may be set in anydesired position and held in that position, or may be permitted to ovenand close automatically as the force -0 the wind varies.

The ventilator frame may be equipped with a screen 31, and a sash 32, inits inner side so that insects or rain may be prevented from enteringwithout requiring the removal of the ventilator from the window.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent of the United States, is-- 1. In a windowventilator, the combination of a plurality of PlVOtHlly mounted panels,means for causing the panels to move in unison, yieldable means to holdthe panels normally in open position, and blast receim ing platesdisposed at the endsof the panels and connected with some of themwhereby to close the panels under abnormal wind pressure.

2. In a window ventilator the combination of a plurality of pivotallymounted panels, means for causing the panels to move in unison,yieldable means for holding the panels normally open, arms extendingfrom the pivots of some of the panels, and blast receiving platescarried by said arms at the ends of the panels.

3. In a window ventilator, the combination of aplurality of pivotallymounted panels, means for causing the panels to move in unison, thepivot of one of the panels being extended, a pair of levers extendinglaterally from said extended pivot at a ri ht angle to each other, aflexible suspension member secured to the upper lever and passing acrossthe end of the lower lever, and a weight carried by said suspensionmember.

4. In a window ventilator, the combinm tion of a plurality of swingingpanels, means for causing the panels to :move in unison, a crankextending from the pivot of one panel, a air of longitudinally movableconcentric s eeves having their outer ends in engagement with theopposite edges of the crank, and means for adjusting said sleevesseparately or together whereby to open or clOse t-he panels and lockthem in the set position.

5. In a window ventilator, the combination of a plurality of swingingpanels, a

crank extending from the pivot of one of the panels, means for causingthe panels to swing in unison, a longitudlnally movable sleeve providedat its outer end with a longitudinal slot through which said crankpasses,

means extending across the end of the sleeve to engage the outer edge ofthe crank for opening the panels, and means for closing the panels. a

6. In a window ventilator, the combination of a plurality of panelsmounted to swing in unison, a crank extending from the pivot of one ofthe panels, means acting on the crank to open or close the panels, and agovernor block frictionally engaging the crank to insure a smooth easymovement of the panels in opening or closing.

7. In a window ventilator, the combination of a plurality of pivotedpanels mounted to swing in unison, the pivot of one of the panels beingextended, a crank extendin from said pivot, a sleeve having a slotteouter end receivin said crank, a second sleeve threaded into t e firstsleeveto bear upon the crank, a plunger fitted within the inner end ofthe second sleeve to rotate therewith but capable of relativelongitudinal movement, and a nut having threaded external engagementwith the inner end of the first sleeve and held against longitudinalmovement.

Signed at Waverly, New York, this fif teenth day of March 1920.

VICTOR M. ALLEN.

